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A Shared-cube Approach to ESOP-based Synthesis of Reversible Logic

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Author(s): Noor M. Nayeem | Jacqueline E. Rice

Journal: Facta Universitatis Series : Electronics and Energetics
ISSN 0353-3670

Volume: 24;
Issue: 3;
Start page: 385;
Date: 2011;
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Keywords: Reversible logic | logic synthesis | ESOP | Toffoli gate cascade.

ABSTRACT
Reversible logic is being suggested as a possibility for overcoming potential power loss and heat dissipation problems that the computing industry may soon be at a loss to overcome. However, for reversible logic to be a solution we must have techniques for synthesizing function descriptions to reversible circuits. This paper presents an improved ESOP-based reversible logic synthesis approach which leverages situations where cubes are shared by multiple outputs and ensures that the implementation of each cube requires just one Toffoli gate. It has the potential to minimize both gate count and quantum cost, and in fact our experimental results show that this technique can reduce the quantum cost up to 75% compared to results from the existing work.
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